OK, let's work through this together. We're starting with 629 and we're going to multiply it by 83, which means we add 629 to itself 83 times.
Step 1: 0 + 629 = 629
Step 2: 629 + 629 = 1258
Step 3: 1258 + 629 = 1887
Step 4: 1887 + 629 = 2516
Step 5: 2516 + 629 = 3145
Step 6: 3145 + 629 = 3774
Step 7: 3774 + 629 = 4403
Step 8: 4403 + 629 = 5032
Step 9: 5032 + 629 = 5661
Step 10: 5661 + 629 = 6290
Step 11: 6290 + 629 = 6919
Step 12: 6919 + 629 = 7548
Step 13: 7548 + 629 = 8177
Step 14: 8177 + 629 = 8806
Step 15: 8806 + 629 = 9435
Step 16: 9435 + 629 = 10064
Step 17: 10064 + 629 = 10693
Step 18: 10693 + 629 = 11322
Step 19: 11322 + 629 = 11951
Step 20: 11951 + 629 = 12580
Step 21: 12580 + 629 = 13209
Step 22: 13209 + 629 = 13838
Step 23: 13838 + 629 = 14467
Step 24: 14467 + 629 = 15096
Step 25: 15096 + 629 = 15725
Step 26: 15725 + 629 = 16354
Step 27: 16354 + 629 = 16983
Step 28: 16983 + 629 = 17612
Step 29: 17612 + 629 = 18241
Step 30: 18241 + 629 = 18870
Step 31: 18870 + 629 = 19499
Step 32: 19499 + 629 = 20128
Step 33: 20128 + 629 = 20757
Step 34: 20757 + 629 = 21386
Step 35: 21386 + 629 = 22015
Step 36: 22015 + 629 = 22644
Step 37: 22644 + 629 = 23273
Step 38: 23273 + 629 = 23902
Step 39: 23902 + 629 = 24531
Step 40: 24531 + 629 = 25160
Step 41: 25160 + 629 = 25789
Step 42: 25789 + 629 = 26418
Step 43: 26418 + 629 = 27047
Step 44: 27047 + 629 = 27676
Step 45: 27676 + 629 = 28305
Step 46: 28305 + 629 = 28934
Step 47: 28934 + 629 = 29563
Step 48: 29563 + 629 = 30192
Step 49: 30192 + 629 = 30821
Step 50: 30821 + 629 = 31450
Step 51: 31450 + 629 = 32079
Step 52: 32079 + 629 = 32708
Step 53: 32708 + 629 = 33337
Step 54: 33337 + 629 = 33966
Step 55: 33966 + 629 = 34595
Step 56: 34595 + 629 = 35224
Step 57: 35224 + 629 = 35853
Step 58: 35853 + 629 = 36482
Step 59: 36482 + 629 = 37111
Step 60: 37111 + 629 = 37740
Step 61: 37740 + 629 = 38369
Step 62: 38369 + 629 = 38998
Step 63: 38998 + 629 = 39627
Step 64: 39627 + 629 = 40256
Step 65: 40256 + 629 = 40885
Step 66: 40885 + 629 = 41514
Step 67: 41514 + 629 = 42143
Step 68: 42143 + 629 = 42772
Step 69: 42772 + 629 = 43401
Step 70: 43401 + 629 = 44030
Step 71: 44030 + 629 = 44659
Step 72: 44659 + 629 = 45288
Step 73: 45288 + 629 = 45917
Step 74: 45917 + 629 = 46546
Step 75: 46546 + 629 = 47175
Step 76: 47175 + 629 = 47804
Step 77: 47804 + 629 = 48433
Step 78: 48433 + 629 = 49062
Step 79: 49062 + 629 = 49691
Step 80: 49691 + 629 = 50320
Step 81: 50320 + 629 = 50949
Step 82: 50949 + 629 = 51578
Step 83: 51578 + 629 = 52207

So, 629*83 = 52207